EP3362317B1 - Dispositif à lentille pour une caméra d'un véhicule à moteur avec une zone adhésive améliorée, caméra, véhicule à moteur ainsi que procédé - Google Patents

Dispositif à lentille pour une caméra d'un véhicule à moteur avec une zone adhésive améliorée, caméra, véhicule à moteur ainsi que procédé Download PDF

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Publication number
EP3362317B1
EP3362317B1 EP16781804.6A EP16781804A EP3362317B1 EP 3362317 B1 EP3362317 B1 EP 3362317B1 EP 16781804 A EP16781804 A EP 16781804A EP 3362317 B1 EP3362317 B1 EP 3362317B1
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EP
European Patent Office
Prior art keywords
adhesive
camera
lens
area
lens device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16781804.6A
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German (de)
English (en)
Other versions
EP3362317A1 (fr
Inventor
John Grimes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Connaught Electronics Ltd
Original Assignee
Connaught Electronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Connaught Electronics Ltd filed Critical Connaught Electronics Ltd
Publication of EP3362317A1 publication Critical patent/EP3362317A1/fr
Application granted granted Critical
Publication of EP3362317B1 publication Critical patent/EP3362317B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/04—Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/51—Housings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

Definitions

  • the present invention relates to a lens device for a camera of a motor vehicle with at least one lens and with a lens retainer for retaining the at least one lens, wherein the lens retainer has an adhesive area at an outside, to which an adhesive can be applied for connecting the lens device to a camera housing of the camera.
  • the present invention relates to a camera for a motor vehicle having such a lens device.
  • the present invention relates to a motor vehicle with such a camera.
  • the present invention relates to a method for producing a camera for a motor vehicle.
  • the interest is in particular directed to cameras for a motor vehicle.
  • Such cameras can for example be a part of a driver assistance system of the motor vehicle, by which an environmental region of the motor vehicle can be captured.
  • multiple cameras can be disposed distributed at an outside of the motor vehicle.
  • the environmental region captured by the cameras can then be presented to the driver for example on a corresponding display device. In this manner, the driver can be assisted in driving the motor vehicle.
  • the cameras include a camera housing, which is usually two-part formed, for example can be formed of aluminum.
  • a camera housing In the interior of the camera housing, at least one circuit board can be disposed, on which the electronic components of the camera are disposed.
  • An image sensor of the camera can also be disposed on this at least one circuit board.
  • the camera for example has a lens device.
  • This lens device includes at least one lens as well as a lens retainer for retaining the at least one lens.
  • the lens device can be inserted into a corresponding opening of the camera at least in certain areas.
  • the area of the lens device which is disposed outside of the camera, has an adhesive area, to which an adhesive can be applied. In this manner, the lens device and the camera housing can be connected to each other by means of the adhesive.
  • US 2011/0032416 A1 describes a camera device, which has a lens block and a substrate, on which an image sensor is disposed.
  • the lens block includes a support block, which can be connected to the substrate by means of an adhesive connection.
  • the support block has a plurality of recesses, into which the adhesive is introduced.
  • the adhesive connection between the support block and the substrate can be improved. The same can be affirmed from the camera device as disclosed in KR20130119195 A and US2008/239522 A1 .
  • this object is solved by a lens device, by a camera, by a motor vehicle as well as by a method having the features according to the respective independent claims.
  • Advantageous implementations of the present invention are the subject matter of the dependent claims, of the description and of the figures.
  • the lens device includes a lens retainer for retaining the at least one lens.
  • the lens retainer has an adhesive area at its outside, to which an adhesive can be applied for connecting the lens device to a camera housing of the camera.
  • the lens retainer has a base surface and a plurality of elevations in the adhesive area, wherein the respective elevations are formed raised to the base surface.
  • the lens device can be employed in a camera for a motor vehicle.
  • the lens device includes the lens retainer.
  • This lens retainer can for example be manufactured of a metal, for example aluminum.
  • the at least one lens can be disposed. Multiple lenses can also be disposed in the interior of the lens retainer at least in certain areas.
  • the lens device can be introduced into a corresponding opening of the camera housing at least in certain areas.
  • a part of the lens device which can also be referred to as a cap element, is disposed outside of the camera housing.
  • an adhesive area is provided at the outside of the lens retainer in the area of the cap element. A corresponding adhesive can be applied to this adhesive area, and thus an adhesive connection between the lens retainer and the camera housing can be provided.
  • the lens retainer has the base surface and a plurality of elevations in the adhesive area. These elevations are each formed raised to the base surface. In other words, the respective elevations extend starting from the base surface.
  • the lens retainer has the base surface and a plurality of elevations in the adhesive area. These elevations are each formed raised to the base surface. In other words, the respective elevations extend starting from the base surface.
  • an adhesive connection between two smooth surfaces is present, namely the base surface and the corresponding connecting area of the camera housing.
  • adhesive is for example completely detached from the base surface if a tensile force at a predetermined angle is exerted on the lens device.
  • the adhesive surface of the lens device in contact with the adhesive can be increased.
  • the adhesive adheres more reliably to the adhesive area of the lens device after curing. In this manner, a more reliable adhesive connection between the lens device and the camera housing can overall be provided.
  • Each of the elevations has a first adhesive surface, which is disposed parallel to the base surface, and a second adhesive surface, which is disposed obliquely to the base surface.
  • the respective elevations can be formed such that the first adhesive surface is disposed substantially parallel to the base surface.
  • the first adhesive surface can be associated with the area of the respective elevation, which is farthest away from the base surface.
  • each of the elevations can have at least a second adhesive surface, which is disposed obliquely to the base surface. It can also be provided that the second adhesive surface is disposed substantially perpendicularly to the base surface.
  • the elevations each have a transitional area, which is disposed between the first adhesive surface and the second adhesive surface, and the first transitional area has a predetermined curvature.
  • the respective elevations do not have sharp edges in the transitional area between the first and the second adhesive surface.
  • the edges in the transitional area between the first adhesive surface and the second surface are therefore correspondingly rounded.
  • the elevations each have a second transitional area, which is disposed between the second adhesive surface and the base surface, and the second transitional area has a predetermined curvature.
  • the second transitional area between the elevations and the base surface it is provided that sharp edges are not present.
  • the first transitional area and the second transitional area have the same predetermined curvature.
  • the base surface is annularly formed and the plurality of elevations is disposed uniformly spaced from each other along a circumferential direction of the base surface.
  • the base surface or the outside of the lens retainer, with which the base surface is associated can be substantially annularly formed.
  • the elevations, which extend starting from the base surface are disposed uniformly spaced from each other, it can be achieved that an increased surface is provided in the entire adhesive area.
  • the same adhesive force can be provided in the entire adhesive area.
  • the plurality of elevations each has a main extension direction in radial direction of the base surface and the respective elevations have a consistent cross-sectional area along the main extension direction.
  • the respective elevations can be formed such that they each extend along the radial direction of the base surface.
  • the cross-sectional area of the respective elevations is constant in the main extension direction. In other words, the cross-sectional area of the respective elevations does not vary. Since the base surface is substantially circularly formed, the respective elevations extend starting from the center of the annulus in radial direction.
  • the plurality of elevations is formed in a predetermined area of the base surface.
  • the elevations can be formed in that area of the base surface, which faces the inner circle of the circular base surface.
  • the adhesive is irradiated with a UV radiation source, the beam path can extend from the outer circle to the inner circle.
  • the adhesive is present all over on the base surface in an area between the outer circle and the elevations. In the area adjoining to it, the elevations are then formed. Thus, it can be achieved that the adhesive in the beam path and the adhesive between the elevations is completely cured.
  • the lens retainer has a retaining element and a cap element, which are each cylindrically formed and are disposed one behind the other in axial direction of the lens retainer, wherein the cap element has a larger diameter compared to the retaining element and wherein the adhesive area is associated with the area of the outside of the cap element, which adjoins to the retaining element.
  • the retaining element can be inserted into the opening of the camera housing corresponding thereto.
  • the cap element having a larger diameter compared to the retaining element is disposed outside of the camera housing.
  • the adhesive area is associated with the area of the outside of the cap element, which faces the camera housing and which adjoins to the retaining element. This area, which includes the base surface, is then annularly formed.
  • a camera according to the invention for a motor vehicle includes a lens device according to the invention. Moreover, the camera includes a camera housing.
  • the camera housing can for example be two-part formed and be manufactured of aluminum. In the interior of the camera housing, the electronics of the camera and an image sensor of the camera can then be disposed.
  • the camera can have a motor vehicle fixing device for fixing the camera to the motor vehicle.
  • a motor vehicle according to the invention includes at least one camera according to the invention. It can also be provided that the motor vehicle includes a plurality of cameras, which are for example disposed distributed on the motor vehicle. An environmental region of the motor vehicle can for example be captured by the cameras. Therein, the image sequences or video data provided by the respective cameras, which describe the environmental region, can be presented on a display device of the motor vehicle.
  • a method according to the invention for producing a camera for a motor vehicle includes providing a lens device according to the invention. Moreover, a camera housing is provided. Furthermore, an adhesive is applied to the adhesive area of the lens retainer of the lens device and the lens device is connected to the camera housing by means of the adhesive.
  • the adhesive is irradiated with radiation in the ultraviolet wavelength range for curing.
  • the adhesive can be applied to the adhesive area of the lens device or the lens retainer in the liquid state.
  • the lens device can be disposed in the corresponding opening of the camera housing at least in certain areas.
  • the lens device can then be adjusted to the image sensor disposed in the interior of the camera housing.
  • the adhesive can be cured with UV radiation.
  • the camera or the camera housing and the lens housing connected by the adhesive can be introduced into a corresponding furnace, where the adhesive is completely cured.
  • Fig. 1 shows a motor vehicle 1 according to an embodiment of the present invention in a plan view.
  • the motor vehicle 1 is formed as a passenger car in the present case.
  • the motor vehicle 1 includes a driver assistance system 2, which in turn includes a control device 3.
  • the control device 3 can for example be constituted by an electronic control unit of the motor vehicle 1.
  • the motor vehicle 1 or the driver assistance system 2 includes at least one camera 4.
  • the motor vehicle 1 includes four cameras 4, which are disposed distributed on the motor vehicle 1.
  • one of the cameras 4 is disposed in a rear area 5
  • one of the cameras 4 is disposed in a front area 7
  • the remaining two cameras 4 are disposed in a respective lateral area 6, in particular in an area of the wing mirrors.
  • the four cameras 4 are preferably formed identical in construction. Presently, the number and the arrangement of the cameras 4 are to be purely exemplarily understood.
  • An environmental region 8 of the motor vehicle 1 can be captured by the cameras 4.
  • an image sequence or video data can be provided by the cameras 4, which describes the environmental region 8.
  • This video data can be transmitted from the cameras 4 to the control device 3.
  • a display device of the motor vehicle 1 not illustrated here can be controlled by means of the control device 3 such that the video data of the cameras 4 can be displayed to the driver.
  • Fig. 2 shows one of the cameras 4 in an exploded illustration.
  • the camera 4 includes a lens device 9, which in turn includes a lens retainer 10. At least one lens 11 of the lens device 9 can be retained by the lens retainer 10. Presently, a lens 11 is disposed in an interior of the lens retainer 10 at least in certain areas.
  • the lens device 9 includes a cap element 12 as well as a retaining element 13.
  • the camera 4 includes a camera housing 15, in which the electronics of the camera 4 and an image sensor of the camera 4 can be disposed.
  • the camera housing 15 has an opening 17 corresponding to the retaining element 13.
  • the lens device 9 can be introduced into the camera housing 15 at least in certain areas.
  • the retaining element 13 is disposed within the opening 17 of the camera housing 15 and the cap element 12 is outside of the camera housing 15.
  • an adhesive 14 is used to connect the lens device 9 to the camera housing 15.
  • This adhesive 14 is applied to an adhesive area 16 of the lens device 9.
  • an adhesive connection between the adhesive area 16 of the lens device 9 and a connecting area 18 of the camera housing 15 can be provided.
  • Fig. 3 shows a lens device 9 according to the prior art in a perspective view.
  • the cap element 12 has a larger diameter compared to the retaining element 13.
  • the adhesive area 16 is apparent, which is formed by the area at the outside of the lens retainer 10 or the cap element 12, which is disposed in the connecting area 18 of the camera housing 15.
  • the lens retainer 10 or the cap element 12 has a base surface 19 in the adhesive area 16, which is annularly formed.
  • the adhesive 14 can then be applied to this base surface 19.
  • the adhesive force 20 provided by the adhesive 14 only acts in a direction perpendicularly to the base surface 19. If a force is exerted on the lens device 9 in the assembled state of the camera 4, which is formed obliquely to this adhesive force 20, it can be the case that the adhesive 14 completely detaches from the base surface 19.
  • Fig. 4 shows a lens device 9 according to an embodiment of the present invention in a perspective view.
  • a plurality of elevations 21 is formed in the adhesive area 16. These elevations 21 extend starting from the base surface 19.
  • the respective elevations 21 are disposed uniformly spaced from each other along a circumferential direction of the base surface 19.
  • the elevations 21 are formed such that the main extension directions 28 of the respective elevations 21 extend in radial direction of the base surface 19.
  • Fig. 5 shows an enlarged view of the lens device 9 according to Fig. 4 .
  • the respective elevations 21 have a first adhesive surface 22, which is disposed substantially parallel to the base surface 19.
  • the respective elevations 21 include second adhesive surfaces 23, which are disposed obliquely to the base surface 19.
  • a first transitional area 24 is formed, which has a predetermined curvature.
  • a second transitional area 25 also having a predetermined curvature is formed between the second adhesive surfaces 23 and the base surface 19.
  • the elevations 21 are formed in a predetermined area of the base surface 19. Therein, an area 30 of the base surface 19 is free of elevations 21. As already explained, the respective elevations 21 are disposed in radial direction of the base surface 19. In addition, the cross-sectional areas 27 of the elevations are constant along the main extension direction 28. Thus, it can be achieved that the adhesive 14 disposed between the elevations 21 can be completely irradiated by means of UV radiation. If the radiation is for example emitted along the direction 29, it can be achieved that the adhesive 14 is completely illuminated.
  • Fig. 6 shows the lens device 9 according to Fig. 4 in a side view.
  • the wave-shaped structure of the elevations 21 disposed next to each other is apparent.
  • UV radiation which is for example introduced along the direction 29, can completely irradiate the adhesive 14 between the elevations 21.
  • the adhesive 14 is first irradiated with the UV radiation. This can for example be effected after the lens device 9 or the at least one lens 11 has been adjusted to the image sensor. Subsequent thereto, the adhesive can be completely cured in a furnace.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Studio Devices (AREA)
  • Lens Barrels (AREA)

Claims (9)

  1. Dispositif (9) à lentille destiné à une caméra (4) d'un véhicule (1) à moteur comprenant au moins une lentille (11) et comprenant un arrêtoir (10) de lentille servant à retenir la ou les lentilles (11), l'arrêtoir (10) de lentille présentant une zone adhésive (16) sur l'extérieur, à laquelle un adhésif (14) peut être appliqué pour lier le dispositif (9) à lentille à un boîtier (15) de caméra de la caméra (4),
    caractérisé en ce que
    l'arrêtoir (9) de lentille présente une surface (19) de base semblable à un anneau et une pluralité de proéminences (21) dans la zone adhésive (16), chacune des proéminences (21) étant formée de manière surélevée par rapport à la surface (19) de base et présentant une première surface adhésive (22), qui est disposée sensiblement parallèlement au rayon de la surface (19) de base s'étendant dans une direction radiale de la surface (19) de base suivant une direction (28) d'étendue principale de la proéminence (21), et une seconde surface adhésive (23), qui est disposée sensiblement obliquement par rapport au rayon de la surface (19) de base, les proéminences (21) présentant chacune une première zone (24) de transition, qui est disposée entre la première surface adhésive (22) et la seconde surface adhésive (23), et la première zone (24) de transition présentant une courbure prédéterminée qui donne aux proéminences (21) une forme sensiblement lisse et
    la pluralité de proéminences (21) est disposée de manière uniformément espacée l'une par rapport à l'autre suivant une direction circonférentielle de la surface (19) de base.
  2. Dispositif (9) à lentille selon la revendication 1,
    caractérisé en ce que
    les proéminences (21) présentent chacune une seconde zone (25) de transition, qui est disposée entre la seconde surface adhésive (23) et la surface (19) de base, et la seconde zone (25) de transition présente une courbure prédéterminée.
  3. Dispositif (9) à lentille selon la revendication 1 ou 2,
    caractérisé en ce que
    les proéminences (21) respectives présentent une aire (27) en section droite régulière suivant la direction (28) d'étendue principale.
  4. Dispositif (9) à lentille selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la pluralité de proéminences est formée dans une zone prédéterminée de la surface de base.
  5. Dispositif (9) à lentille selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    l'arrêtoir (9) de lentille comprend un élément (13) de retenue et un élément (12) de chapeau, dont chacun est formé de manière cylindrique et qui sont disposés l'un derrière l'autre dans la direction axiale de l'arrêtoir (9) de lentille, l'élément (12) de chapeau présentant un plus grand diamètre comparé à l'élément (13) de retenue et la zone adhésive (16) étant associée à la zone de l'extérieur de l'élément (12) de chapeau qui jouxte l'élément (13) de retenue.
  6. Caméra (4) destinée à un véhicule (1) à moteur, dotée d'un dispositif (9) à lentille selon l'une quelconque des revendications précédentes et d'un boîtier (15) de caméra.
  7. Véhicule (1) à moteur doté d'au moins une caméra (4) selon la revendication 6.
  8. Procédé de production d'une caméra (4) destinée à un véhicule (1) à moteur, dans laquelle un dispositif (9) à lentille selon l'une quelconque des revendications précédentes est mis en place, un boîtier (15) de caméra est mis en place, un adhésif (14) est appliqué à la zone adhésive (16) de l'arrêtoir (10) de lentille du dispositif (9) à lentille et le dispositif (9) à lentille est lié au boîtier (15) de caméra au moyen de l'adhésif (14).
  9. Procédé selon la revendication 8,
    caractérisé en ce que
    l'adhésif (14) est irradié avec un rayonnement dans la gamme de longueurs d'onde de l'ultraviolet pour le durcissement.
EP16781804.6A 2015-10-16 2016-10-14 Dispositif à lentille pour une caméra d'un véhicule à moteur avec une zone adhésive améliorée, caméra, véhicule à moteur ainsi que procédé Active EP3362317B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015117611.4A DE102015117611A1 (de) 2015-10-16 2015-10-16 Linseneinrichtung für eine Kamera eines Kraftfahrzeugs mit verbessertem Klebebereich, Kamera, Kraftfahrzeug sowie Verfahren
PCT/EP2016/074746 WO2017064268A1 (fr) 2015-10-16 2016-10-14 Dispositif à lentille pour une caméra d'un véhicule à moteur avec une zone adhésive améliorée, caméra, véhicule à moteur ainsi que procédé

Publications (2)

Publication Number Publication Date
EP3362317A1 EP3362317A1 (fr) 2018-08-22
EP3362317B1 true EP3362317B1 (fr) 2021-09-15

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EP16781804.6A Active EP3362317B1 (fr) 2015-10-16 2016-10-14 Dispositif à lentille pour une caméra d'un véhicule à moteur avec une zone adhésive améliorée, caméra, véhicule à moteur ainsi que procédé

Country Status (7)

Country Link
US (1) US10562465B2 (fr)
EP (1) EP3362317B1 (fr)
JP (1) JP6668466B2 (fr)
KR (1) KR102119329B1 (fr)
CN (1) CN108367718B (fr)
DE (1) DE102015117611A1 (fr)
WO (1) WO2017064268A1 (fr)

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CN108367718B (zh) 2021-11-05
JP6668466B2 (ja) 2020-03-18
KR102119329B1 (ko) 2020-06-05
US20180304824A1 (en) 2018-10-25
DE102015117611A1 (de) 2017-04-20
JP2018537705A (ja) 2018-12-20
CN108367718A (zh) 2018-08-03
EP3362317A1 (fr) 2018-08-22
US10562465B2 (en) 2020-02-18
WO2017064268A1 (fr) 2017-04-20
KR20180088805A (ko) 2018-08-07

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